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  <h1 class="topictitle1">Planning the Replication Network</h1>
  <div>
   <p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p165141546151618">Before creating a replication job, ensure that the replication network has been established and meets the related network requirements. This section describes the requirements for the replication network and networking support.</p>
   <div class="section" id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_section12984845121520">
    <h4 class="sectiontitle">Requirements for the Replication Network</h4>
    <p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1511034811516">For replication, the replication and backup networks of the <span id="exchange_gud_00037__en-us_topic_0000001839143205_text127010210018">product</span> must use the same interface modules. <a href="#exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403">Table 1</a> describes the requirements for the replication network.</p>
    <div class="tablenoborder">
     <a name="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403"></a><a name="en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403"></a>
     <table cellpadding="4" cellspacing="0" summary="" id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403" frame="border" border="1" rules="all">
      <caption>
       <b>Table 1 </b>Requirements for the replication network
      </caption>
      <colgroup>
       <col style="width:21.740000000000002%">
       <col style="width:78.25999999999999%">
      </colgroup>
      <thead align="left">
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row112356184404">
        <th align="left" class="cellrowborder" valign="top" width="21.740000000000002%" id="mcps1.3.2.3.2.3.1.1"><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p72359181409">Item</p></th>
        <th align="left" class="cellrowborder" valign="top" width="78.25999999999999%" id="mcps1.3.2.3.2.3.1.2"><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p20235131813408">Network Requirement</p></th>
       </tr>
      </thead>
      <tbody>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row1388919291310">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1588917213131">Replication network</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1588912218134">For details about network connections for the replication networks of the primary and secondary storage systems, see "Networking Planning" in the <i><cite id="exchange_gud_00037__en-us_topic_0000001839143205_cite57171056122614">Installation Guide</cite></i>.</p></td>
       </tr>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row32359186402">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p182357188409">Replication network protocol</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p523520189408">TCP/IP protocol</p></td>
       </tr>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row141891258184312">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p31891358164312">IP address</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_p57551828105717">For details about the configuration requirements, see "Networking Planning" in the <i><cite id="exchange_gud_00037__en-us_topic_0000001839143205_cite118241752104117">Installation Guide</cite></i> specific to your product model.</p></td>
       </tr>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row1267393041820">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p10963471819">IP address type</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p149193419187">IPv4 or IPv6</p></td>
       </tr>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row136406311993">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p123501844017">Network quality requirements</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 ">
         <ul id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_ul11355643174214">
          <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li143551343124215">Round-trip time (RTT) ≤ 100 ms</li>
          <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li15355194313422">Bandwidth ≥ 10 MB</li>
          <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li14355124334214">Packet loss rate &lt; 0.1%</li>
         </ul></td>
       </tr>
       <tr id="exchange_gud_00037__en-us_topic_0000001839143205_row17272394333">
        <td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.2.3.2.3.1.1 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_p1727639193314">Management network</p></td>
        <td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.2.3.2.3.1.2 "><p id="exchange_gud_00037__en-us_topic_0000001839143205_p472763983313">If you plan to add the replication target cluster based on a management IP address, ensure that the management network of the primary end is connected to that of the secondary end.</p></td>
       </tr>
      </tbody>
     </table>
    </div>
   </div>
   <div class="section" id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_section1715344820211">
    <h4 class="sectiontitle">Replication Network</h4>
    <p id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1041775814153">The <span id="exchange_gud_00037__en-us_topic_0000001839143205_text1130119314018">product</span> supports the following replication network types:</p>
    <ul id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_ul3387161518167">
     <li id="exchange_gud_00037__en-us_topic_0000001839143205_li3411165471410">1:1 replication</li>
     <li id="exchange_gud_00037__en-us_topic_0000001839143205_li1766416120150">1:<em id="exchange_gud_00037__en-us_topic_0000001839143205_i1798416191810">N</em> replication (the maximum value of <em id="exchange_gud_00037__en-us_topic_0000001839143205_i3984176121818">N</em> is 4)</li>
     <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li3717729161610"><em id="exchange_gud_00037__en-us_topic_0000001839143205_i18171023121914">N</em>:1 replication (the maximum value of <em id="exchange_gud_00037__en-us_topic_0000001839143205_i19841230101914">N</em> is 16)</li>
     <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li18137174114164">Reverse replication</li>
     <li id="exchange_gud_00037__en-us_topic_0000001839143205_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li13387151561610">Cascaded replication (A &gt; B &gt; C)
      <div class="fignone" id="exchange_gud_00037__en-us_topic_0000001839143205_fig257414414105">
       <span class="figcap"><b>Figure 1 </b><em id="exchange_gud_00037__en-us_topic_0000001839143205_i8142133482710">N</em>:1 replication</span><br><span><img class="eddx" id="exchange_gud_00037__en-us_topic_0000001839143205_image13574184491020" src="en-us_image_0000001792503870.png"></span>
      </div>
      <div class="fignone" id="exchange_gud_00037__en-us_topic_0000001839143205_fig1267819421890">
       <span class="figcap"><b>Figure 2 </b>1:<em id="exchange_gud_00037__en-us_topic_0000001839143205_i285612445273">N</em> replication</span><br><span><img class="eddx" id="exchange_gud_00037__en-us_topic_0000001839143205_image146782425914" src="en-us_image_0000001839223217.png"></span>
      </div>
      <div class="fignone" id="exchange_gud_00037__en-us_topic_0000001839143205_fig816118556217">
       <span class="figcap"><b>Figure 3 </b>Reverse replication</span><br><span><img class="eddx" id="exchange_gud_00037__en-us_topic_0000001839143205_image13161185510217" src="en-us_image_0000001839143261.png"></span>
      </div>
      <div class="fignone" id="exchange_gud_00037__en-us_topic_0000001839143205_fig12457155812716">
       <span class="figcap"><b>Figure 4 </b>Cascaded replication</span><br><span><img class="eddx" id="exchange_gud_00037__en-us_topic_0000001839143205_image1645712581876" src="en-us_image_0000001792344142.png"></span>
      </div></li>
    </ul>
   </div>
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